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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/lib/libc/powerpc64/string/bcopy_vsx.S
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/*-

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 * Copyright (c) 2018 Instituto de Pesquisas Eldorado

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 * All rights reserved.

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 *

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 * Redistribution and use in source and binary forms, with or without

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 * modification, are permitted provided that the following conditions

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 * are met:

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 * 1. Redistributions of source code must retain the above copyright

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 *    notice, this list of conditions and the following disclaimer.

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 * 2. Redistributions in binary form must reproduce the above copyright

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 *    notice, this list of conditions and the following disclaimer in the

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 *    documentation and/or other materials provided with the distribution.

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 * 3. Neither the name of the author nor the names of its contributors may

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 *    be used to endorse or promote products derived from this software

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 *

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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

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 * SUCH DAMAGE.

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 */

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#ifndef FN_NAME

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#define FN_NAME		__bcopy_vsx

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#endif

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/*

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 * r3: dst

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 * r4: src

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 * r5: block increment

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 * r6: blocks to copy

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 * r7/r8/r9/r10: 16-byte offsets to copy

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 */

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#define FN_PHASE2 \

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	mtctr	%r6			;\

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	.align 5			;\

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.Lphase2_loop:				;\

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	lxvd2x  %vs6, %r7,  %r4		;\

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	lxvd2x  %vs7, %r8,  %r4		;\

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	lxvd2x  %vs8, %r9,  %r4		;\

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	lxvd2x  %vs9, %r10, %r4		;\

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	stxvd2x %vs6, %r7,  %r3		;\

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	stxvd2x %vs7, %r8,  %r3		;\

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	stxvd2x %vs8, %r9,  %r3		;\

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	stxvd2x %vs9, %r10, %r3		;\

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	/* phase 2 increment */		;\

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	add	%r4, %r4, %r5		;\

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	add	%r3, %r3, %r5		;\

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					 \

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	bdnz	.Lphase2_loop		;\

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#include "bcopy.S"

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